2,2,7,7-Tetramethyl-1,6-dioxaspiro(4.4)non-3-ene

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  • Identifiers

    CAS number
    15031-05-7

    Molecular formula
    C11H18O2

    SMILES
    CC1(CCC2(O1)C=CC(O2)(C)C)C

    Safety labels

  • Odor profile

    Fragrance
    Herbal 56.7%
    Mint 47.4%
    Woody 44.5%
    Fresh 40.65%
    Camphoreous 36.72%
    Spicy 34.3%
    Sweet 31.07%
    Citrus 30.24%
    Fruity 29.6%
    Green 28.97%

     

    Flavor
    Green 46.69%
    Herbal 40.3%
    Earthy 39.38%
    Minty 30.94%
    Camphor 29.9%
    Mint 27.82%
    Earth 24.46%
    Pepper 22.15%
    Woody 21.68%
    Pine 21.52%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    1.8

    pKa est.
    8.37 (weak base)

    Molecular weight
    182.26 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Fast

    Boiling point est.
    193°C

    Flash point

    • 73.0 ˚C est.

  • Synonyms

    • 2,2,7,7-tetramethyl-1,6-dioxaspiro[4.4]non-3-ene
    • 15031-05-7
    • 2,2,7,7-Tetramethyl-1,6-dioxaspiro(4.4)non-3-ene
    • RefChem:243001
    • 2,2,7,7-tetramethyl-1,6-dioxaspiro[4.4]non-8-ene
    • AKLWIMZXBONTDH-UHFFFAOYSA-N
    • CHEBI:195883
    • DTXSID501238257
    • 2,2,7,7-tetramethyl-1,6-dioxaspiro[4.4]non-3-en
    • 2,2,7,7-tetramethyl-1,6-dioxaspiro[4.4] nona-3-ene
    • 15031-05-7

  • Applications

    2,2,7,7-Tetramethyl-1,6-dioxaspiro(4.4)non-3-ene (CAS 15031-05-7) is primarily used as an intermediate and protecting group in organic synthesis, leveraging its spiro-dioxolane framework. In perfumery and cosmetics, it is evaluated as an odorant or fragrance fixative and may be incorporated as a fragrance component in formulations. It can also find use in household products and cleaners as a fragrance additive to help stabilize scent release. In industrial manufacturing and coatings/inks, it may serve as a chemical intermediate or specialty additive during formulation or resin synthesis. In polymers/plastics chemistry, it may be explored as a protecting-group adjunct during polymer synthesis or as a processing aid under controlled conditions. Overall, its typical roles are as an intermediate, protecting group, and potential odorant or fixative in selective applications, subject to formulation constraints and regulatory compliance.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 190.47
    methanol 260.39
    isopropanol 213.14
    water 10.85
    ethyl acetate 283.64
    n-propanol 192.84
    acetone 281.85
    n-butanol 191.45
    acetonitrile 262.31
    DMF 422.76
    toluene 255.26
    isobutanol 184.1
    1,4-dioxane 479.93
    methyl acetate 300.56
    THF 615.8
    2-butanone 255.15
    n-pentanol 154.21
    sec-butanol 221.56
    n-hexane 103.15
    ethylene glycol 96.68
    NMP 530.79
    cyclohexane 152.04
    DMSO 262.79
    n-butyl acetate 203.44
    n-octanol 267.91
    chloroform 981.45
    n-propyl acetate 186.04
    acetic acid 253.77
    dichloromethane 621.38
    cyclohexanone 393.57
    propylene glycol 172.67
    isopropyl acetate 213.6
    DMAc 543.74
    2-ethoxyethanol 193.21
    isopentanol 174.69
    n-heptane 80.59
    ethyl formate 184.09
    1,2-dichloroethane 260.9
    n-hexanol 269.88
    2-methoxyethanol 305.67
    isobutyl acetate 164.62
    tetrachloromethane 180.31
    n-pentyl acetate 190.89
    transcutol 451.93
    n-heptanol 168.66
    ethylbenzene 190.92
    MIBK 185.35
    2-propoxyethanol 355.3
    tert-butanol 273.43
    MTBE 246.08
    2-butoxyethanol 209.73
    propionic acid 250.3
    o-xylene 227.7
    formic acid 101.44
    diethyl ether 217.78
    m-xylene 211.74
    p-xylene 264.41
    chlorobenzene 271.17
    dimethyl carbonate 200.49
    n-octane 47.57
    formamide 123.53
    cyclopentanone 417.43
    2-pentanone 228.37
    anisole 273.92
    cyclopentyl methyl ether 338.32
    gamma-butyrolactone 498.67
    1-methoxy-2-propanol 321.11
    pyridine 307.88
    3-pentanone 232.12
    furfural 411.36
    n-dodecane 61.12
    diethylene glycol 247.17
    diisopropyl ether 128.36
    tert-amyl alcohol 263.37
    acetylacetone 309.72
    n-hexadecane 66.16
    acetophenone 271.67
    methyl propionate 285.15
    isopentyl acetate 201.3
    trichloroethylene 546.59
    n-nonanol 238.39
    cyclohexanol 272.44
    benzyl alcohol 203.53
    2-ethylhexanol 184.07
    isooctanol 140.9
    dipropyl ether 180.72
    1,2-dichlorobenzene 294.45
    ethyl lactate 171.57
    propylene carbonate 382.71
    n-methylformamide 211.11
    2-pentanol 174.1
    n-pentane 86.28
    1-propoxy-2-propanol 277.52
    1-methoxy-2-propyl acetate 276.19
    2-(2-methoxypropoxy) propanol 264.25
    mesitylene 161.39
    ε-caprolactone 396.78
    p-cymene 144.31
    epichlorohydrin 385.97
    1,1,1-trichloroethane 420.07
    2-aminoethanol 165.01
    morpholine-4-carbaldehyde 488.81
    sulfolane 500.51
    2,2,4-trimethylpentane 65.32
    2-methyltetrahydrofuran 422.09
    n-hexyl acetate 359.8
    isooctane 49.77
    2-(2-butoxyethoxy)ethanol 297.22
    sec-butyl acetate 162.02
    tert-butyl acetate 232.8
    decalin 97.81
    glycerin 208.6
    diglyme 412.5
    acrylic acid 223.45
    isopropyl myristate 183.58
    n-butyric acid 262.02
    acetyl acetate 278.39
    di(2-ethylhexyl) phthalate 175.64
    ethyl propionate 222.85
    nitromethane 364.29
    1,2-diethoxyethane 197.2
    benzonitrile 254.75
    trioctyl phosphate 135.14
    1-bromopropane 231.41
    gamma-valerolactone 508.39
    n-decanol 186.2
    triethyl phosphate 149.58
    4-methyl-2-pentanol 139.51
    propionitrile 218.59
    vinylene carbonate 375.6
    1,1,2-trichlorotrifluoroethane 389.82
    DMS 317.12
    cumene 156.15
    2-octanol 156.39
    2-hexanone 187.88
    octyl acetate 230.43
    limonene 180.58
    1,2-dimethoxyethane 337.82
    ethyl orthosilicate 139.08
    tributyl phosphate 152.91
    diacetone alcohol 245.21
    N,N-dimethylaniline 231.24
    acrylonitrile 251.7
    aniline 232.07
    1,3-propanediol 172.78
    bromobenzene 304.28
    dibromomethane 446.02
    1,1,2,2-tetrachloroethane 522.69
    2-methyl-cyclohexyl acetate 220.98
    tetrabutyl urea 195.52
    diisobutyl methanol 117.5
    2-phenylethanol 242.6
    styrene 198.11
    dioctyl adipate 220.91
    dimethyl sulfate 285.35
    ethyl butyrate 191.21
    methyl lactate 214.68
    butyl lactate 181.2
    diethyl carbonate 171.3
    propanediol butyl ether 261.11
    triethyl orthoformate 171.03
    p-tert-butyltoluene 149.58
    methyl 4-tert-butylbenzoate 282.94
    morpholine 455.96
    tert-butylamine 218.51
    n-dodecanol 152.8
    dimethoxymethane 321.01
    ethylene carbonate 315.1
    cyrene 265.68
    2-ethoxyethyl acetate 216.24
    2-ethylhexyl acetate 182.91
    1,2,4-trichlorobenzene 351.62
    4-methylpyridine 349.88
    dibutyl ether 197.42
    2,6-dimethyl-4-heptanol 117.5
    DEF 282.12
    dimethyl isosorbide 426.04
    tetrachloroethylene 311.17
    eugenol 251.7
    triacetin 356.74
    span 80 286.63
    1,4-butanediol 98.8
    1,1-dichloroethane 363.19
    2-methyl-1-pentanol 159.06
    methyl formate 195.21
    2-methyl-1-butanol 183.73
    n-decane 84.53
    butyronitrile 204.43
    3,7-dimethyl-1-octanol 218.23
    1-chlorooctane 187.9
    1-chlorotetradecane 106.4
    n-nonane 81.51
    undecane 70.67
    tert-butylcyclohexane 93.2
    cyclooctane 77.71
    cyclopentanol 288.48
    tetrahydropyran 407.19
    tert-amyl methyl ether 231.55
    2,5,8-trioxanonane 352.89
    1-hexene 157.25
    2-isopropoxyethanol 168.44
    2,2,2-trifluoroethanol 142.88
    methyl butyrate 231.37

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction